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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
506 | else |
507 | $depth = -1; // Flat. |
508 |
|
509 | $output .= walk_category_tree( $categories, $depth, $r ); |
510 | } |
511 |
|
512 | if ( $title_li && 'list' == $style ) |
513 | $output .= '</ul></li>'; |
514 |
|
515 | $output = apply_filters( 'wp_list_categories', $output ); |
516 |
|
517 | if ( $echo ) |
518 | echo $output; |
519 | else |
520 | return $output; |
521 | } |
522 |
|
523 | /** |
524 | * Display tag cloud. |